Pipe-reducer for dust-collecting systems.



PATENTED JULY 21, 1908.

W. E. ALLINGTON. PIPE RBDUGER FOR DUST COLLECTING SYSITEMS.

APYLIOATION FILED APR. 6, 1907.

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35 present invention is designed.

To these ends my invention consists in a WILLIAME. ALLINGTON,

PATENT OFFICE.

OF SAGINAW, MICHIGAN.

PIPE-REDUCER FOR DUST-COLLECTING SYSTEMS.

Specification of Letters Patent.

' Patented July 21, 1908.

Application filed April 6, 1907. Serial No. 366,710.

To all whom it may concern. I

Be it known that I, WILLIAM E. ALLING- TON, a citizen of the United States, residing at Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements Pi e-Reducersfor'Dust-Collecting Systems, of w ich the following is a specification.

My invention relates to pipe reducer for dust collecting systems, and has for its object to provide an adjusting reducer for insertion in the branch pipe connections, of T-joints, of dust collecting systems, to afford convenient means for so properly proportioning the effective areas of communication between the mains and branch pipes as to secure in the various branches desired suction-ratios.

In my, prior patent No. 840,894 dated J anuary 8, 1907, have disclosed a slide valve construction addressed to this end, but such 'valve construction for installation in old accommodating structural plants requires an change in the fpipling proper, necessitating disconnection o t e main suction pipe jointsection, and, consequently, stoppage of the operation of the entire main during the installation; and further special sizes of pi ing would often require expensive special .va ves. In some instances such shut-down of the plant, and the expense of special valves are most undesirable, and to meet such condi tions and provide a reducer of low cost, adapted for a plication to old piping systems without isturbance of the main or expensive change in old construction work, my

reducer for insertion in 'the branch member of a branch ipe T-joint, having a free openingtoward t e main of less area than the normal area of the branch piping, such reducer referably comprising a positioning wall, to

mterfitwithin the branch arm or T stem of I the joint member, andan easily-reducible restriction wall arranged at an angle to the rpositionin wall to restrict the area of the device at its orward end or'nose.

A suitable construction is indicated in the drawing wherein Figure 1 is a plan view. of a portion of a dust collecting system; Fig. 2 is an enlarged detail in'plan section of the joint embodym the reducer; Fig. 3 is a section on line 3-3 -o the reducer in original condition, and Fig. 4

I makes easy changes ,is-a like view showing the reducer cut away somewhat.

Throughout the drawing like numerals of reference refer always to like parts.

10 indicates a fan, drawing from the main suction pipe 11, and blowing into outlet pipe 12.-

1313 indicate branch pipes, each connected with the main by an acute-angle joint or T, 14, comprising a section 11 constituting part of the main suction pipe 11 and a section 13 constituting part of the branch pipe 13. In accordance with usual practice the main suction pipe is at all points properly pro ortioned in area to the combined areas of t e pipe and branches beyond it.

15 in icates in general the reducer, comprising a positioning wall 16 to interfit snugly within joint section 14 and butting against the inserted end of the adjacent section of branch pipe 13, and a restriction wall 17, arranged at an angle to the axisof the peripheral Wall 16 corresponding to the angle of the joint 14, and preferably about half closing the end of wall structure 1.6. In construction the wall 16 is cut away at the proper angle, and the wall 17 is riveted, soldered or 7 otherwise secured upon the inclined edge thereof.

In arrangement the restricter or reducer is inserted with its restricting wall toward the heel, Y, and the open nose toward the toe, X, of the joint. (Fig. 2.) The wall 17 is made of stock easily reducible by cutting or snipping, and to accurately proportion the area I and requires change of actual dimensions by trimming away of material for the increase of the free area of communication to the desired extent, yet it is of construction which of its restriction-wall dimensions, is cheap, and is susceptibleof easy removal and replacement without crippling the whole system served by the" main suction pipe, and Without removal of the T- joint from the main. Thus, for old installations these reducers perform the essential function of proportioning the effective branch pipeareas, and thereby proportioning the suction-eflects in such pipes, in a manner simple and satisfactory.

While I have herein described in detail a particular structure embodying my invention, it will be apparent that such invention may be, embodie in devices differing in details of construction from that described.

Having thus described my invention, what I claim and desire to secure by Letters Patent, of the United States, is":

1. In a dust collecting system, thecombination with a branch-pipe T-joint, of a reducer inserted in the branch element of such joint, having a free 0 ening toward the main of less area than t e normal area of the branch.

2. A piping reducer for dust collecting sys tems, comprising a positioning part for engagement with the interior of the pipe, and a reduction wall arranged to close one side only of the pipe.

3. A piping restricter comprising a positioning annulus for fitting within a pipe, and

member secure a wall of material ada ted to be cut or snipped closing one si e only of one end of said annulus.

4,1; piping restricter comprising a posi-. tioning annulus for fitting within a pipe, and

a restriction wall closing one side of the anhubs and arranged at an acute angle to the axis of such annulus.

5.-' In combination with a branch ipe joint,'of a dust-collecting system, provi ing a main pipe part and a branch pipe part, ar-

ranged at an acute angle, of a branch pipe restrioter' arranged in the branch pipe part of said joint, and comprising a posltiomng member 'frictionally engaging the interior of such branch pi e part, and a restriction thereto and positioned in parallelism to the, axis of the main pipe part to close a portion of the branch pipe part adjacent the heel of the joint;

In testimony whereof I hereunto set my,

hand-in the presence of two witnesses.

' .WILLIAM E. ALLINGTQN.

In the pres'ence of GEo. T. MAY, Jr., MARY F. AL EN. 

